S
M
T
W
T
F
S
30
68°
55°
31
64°
57°
1
65°
56°
2
69°
58°
3
67°
54°
4
64°
50°
5
64°
57°
6
67°
52°
7
62°
52°
8
64°
55°
9
64°
53°
10
63°
52°
11
64°
52°
12
63°
53°
13
64°
54°
14
64°
54°
15
63°
53°
16
63°
54°
17
64°
54°
18
64°
53°
19
63°
53°
20
61°
52°
21
63°
54°
22
63°
52°
23
62°
52°
24
60°
51°
25
63°
53°
26
62°
53°
27
63°
52°
28
62°
52°
29
61°
51°
30
62°
52°
1
62°
52°
2
61°
52°
3
62°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newtownabbey
Newtownabbey's September 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 50° and 58°. The average high for September is 63° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Newtownabbey. See also: October | November | December.
